I just added a similar question in the February POAS board. This is the first time I’ve experienced sore breasts right after I O’ed. It seems to be subsiding now (3 DPO)…but very strange because this is new to me. Someone responded to me that this is a normal thing caused by hormones. Wish it meant I was prego! 🙂

Yeah, I’d always get sore nipples the day of O and then throughout the LP. Actually, that was one of the main things about my BFP – I didn’t have it for the first time in 11 months. Now that I’m pregnant, I’ve had barely any boob tenderness and Im 5 weeks 3 days – go figure.

@Future Mrs.L: yeah, I always knew I’d Od based on my sore breasts. It’s a pain but also reassuring. I had a mc 2 months ago and now my breasts never get sore. I was told this may be down to low progesterone which is not good so it turns out sore boobs is Good for me!!